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The magnetostrictive Fe-Ga alloy is a unique smart materials with large magnetostriction and strong mechanical strength. Significant researches have been drawn to understand the origin of magnetostriction and improve the magnetostrictive performance. Due to the high conductivity, Fe-Ga alloy needs to be formed into the sheets to avoid current losses, and the high magnetostrion λ// along the applied...
The main problems with the sintered NdFeB magnets are their bad formability, low oxidation resistance, and poor temperature stability. Relatively large grain size, typically more than 3 mm, is also not beneficial to the high coercivity. Current efforts are directed to improve the magnetic properties and reduce the cost of NdFeB magnets by compositional modification, microstructure optimization, and...
Rare earth-cobalt based magnetic materials have attracted considerable attention due to their large anisotropy eld (HA), high saturation magnetizations (Ms), and high Curie temperatures (TC). As the first generation of rare earth-transition metal (RE-TM) based permanent magnet, SmCo5 possesses extraordinary high anisotropy led over 240 kOe, and nanocrystalline SmCo5 magnet bears coercivity as high...
Magnetoelectric effect, i.e. the magnetic field induced ferroelectricity or the electric field induced magnetization, has attracted considerable attention due to the interesting physics involved and the potential practical applications[1, 2]. Ferroelectricity induced by complex magnetic orders, such as spiral orders, will exhibit giant magnetoelectric effect[3]. It is, thus, expected that Y-type hexafer-rites...
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